Speaking to the Daily Mirror, Holly explained that their success is down to their friendship: "It's got to be out friendship. We've known each other for a long time, we've been through a lot - and not necessary on screen, but off screen as well, with babies and life."

Discussing how they work with another, the blonde beauty continued: “We’re very much on the same page with most things, we think about things in the same way, which is really helpful obviously when you’re live.